Actually that’s not true, just look at our recent history, we sacked Ole and got into the play offs in Malky’s first season and promoted the next.
We sacked Paul Trollope and Warnock kept us up and then got us promoted the following season
So in recent history sacking the manager got us promoted the season after
Lots of clubs sack the manager and then get promoted, sometimes it works, sometimes it doesn’t but to say sticking with a manager when it’s clearly not working doesn’t always make sense, we were going down under Trollope before Warnock turned it around